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2003 Lexus ES300 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Lexus REPAIR SHOPS DON'T WANT YOU TO KNOW
Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!Select Section
- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 Lexus ES300 car and truck
repair procedures including Lexus engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your Lexus ES300 automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Lexus ES300 AUTOMOBILES
Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Imported Vehicles
Vehicle: 2003 Lexus ES300 3.0 V6 GAS
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BRAKE SERVICE PROCEDURES FOR 2003 Lexus ES300 AUTOMOBILES
Lexus -> Hydraulic Brake Systems -> Precautions -> Coded Theft Protection Disarming
Vehicle: 2003 Lexus ES300 3.0 V6 GAS
Coded Theft Protection Disarming
- Obtain theft protection code number from customer.
- Enter code number prior to disconnecti...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Lexus ES300 AUTOMOBILES
Lexus -> Fuel Filter Replacement -> 2002-06 ES300 & ES330 -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 2003 Lexus ES300 3.0 V6 GAS
Fuel System Pressure Relief
- Remove circuit opening relay located in engine compartment relay box.
- Start the engine and allow it to idle until it stalls, then turn ignition OFF.
- Remove the fuel tank cap to release air from fuel tank.
- Disconnect the battery ground cable.
- Install the circuit opening relay.
Removal & Installation
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures ...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Lexus ES300 AUTOMOBILES
CV AXLE SHAFT, Replace -> Front
Vehicle: 2003 Lexus ES300 3.0 V6 GAS
Front
- Raise and support vehicle and support it with safety stands in proper locations.
- Remove wheel nuts and front wheels.
- Remove front fender apron seal.
- Remove drain plug from transaxle and drain transaxle fluid.
- Remove split pin and driveshaft castle nut and washer from front hub.
- Apply brake and remove lefthand axle hub nut.
- Remove lefthand front stabilizer nut and separate link assembly. If ball joint turns together with nut use suitable tool to hold stud.
- Disconnect lefthand speed sensor harness clip and separate sensor wire and hose from shock absorber. Do not damage speed...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Lexus ES300 AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Lexus ES300 3.0 V6 GAS
- Disconnect battery ground cable.
- Disconnect alternator connector.
- Remove nut, and disconnect lead wire from terminal B+.
- Loosen alternator mounting bolts.
- Loosen bolt to lessen tension of drive belt.
- Remove alternator mou...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Lexus ES300 AUTOMOBILES
Cabin Air Filter Service -> Lexus -> 2002-03 ES300
Vehicle: 2003 Lexus ES300 3.0 V6 GAS
The cabin air filter should be replaced every 7,500 miles or 6 months. The filter should be replaced more often if air flow is less than normal.
- Open the glove compartment.
- Remove the screw attaching the glove compartment brace to the glove compartment.
- Remove the two retaining pins located at the upper portion of the glove compartment, then lower the glove compartment, Fig. .
- Through the glove compartment opening, remove the cabin air filter housing, Fig. .
- Remove...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Lexus ES300 AUTOMOBILES
Lexus -> Anti-Lock Brake System (ABS)/VSA System Warning Lamp -> 1990-2006
Vehicle: 2003 Lexus ES300 3.0 V6 GAS
The anti-lock warning lamp is used to warn of an anti-lock brake system fault. The lamp will be lit during engine start-up, but should go out when the self-diagnostic system determines that the anti-lock system is functioning properly. If the lamp remains lit, an anti-lock fault is indicated. After diagnosis and repair are complete, the lamp may be reset as follows:
- Place ignition switch in On position.
- On models except GX470, 2002-03 ES300, IS300, LS430, LX470, SC430 and 2004-06 ES330 and RX330 models, connect jumper tool No. 09843-18020, or equivalent, betwe...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Lexus ES300 AUTOMOBILES
Radiator, Replace
Vehicle: 2003 Lexus ES300 3.0 V6 GAS
- Drain coolant.
- Disconnect radiator hose inlet.
- Disconnect radiator hose outlet.
- Disconnect oil cooler inlet hose.
- Disconnect oil cooler outlet hose no.2.
- Remove the 3 bolts, the air cleaner inlet and air cleaner inlet.
- Remove the radiator lower air deflec...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Lexus ES300 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Lexus ES300 3.0 V6 GAS
- Rotate or lift the belt tensioner arm, using a suitable tool to relieve tension from dr...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Lexus ES300 AUTOMOBILES
Component location diagrams for most 2003 Lexus ES300 cars and light trucks sold in the U.S. from 1990+.
 Emission Control Components Diagram for 2003 Lexus ES300 3.0 V6 GASComponents on diagram: |
 Stop Light System Components Diagram for 2003 Lexus ES300 3.0 V6 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2003 Lexus ES300 AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Lexus ES300 cars and light trucks sold in the U.S.
 2003 Lexus ES300 3.0 V6 GAS Wiring DiagramComponents on diagram: |
 2003 Lexus ES300 3.0 V6 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Lexus ES300 AUTOMOBILES
OEM TSB listings for most 2003 Lexus ES300 cars and light trucks sold in the U.S. from 1985+.
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Document: REPAIR MANUAL SUPPLEMENT: VEHICLE PULLING TO ONE SIDE - REVISED Vehicle: 2003 Lexus ES300 3.0 V6 GAS Symptoms: |
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Document: STEERING INTERMEDIATE SHAFT NOISE - REVISED Vehicle: 2003 Lexus ES300 3.0 V6 GAS Symptoms: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Lexus ES300 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Lexus ES300 cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 2003 Lexus ES300 cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 2003 Lexus ES300 cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 2003 Lexus ES300 cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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